Liquid-fuel burner.



J. 0. soonwm. 'uo'um FUEL BURNER; FPPLlCTION HLED FEB- III l9l8- Patented Apr. 29,1919.

2 SHEETS-SHEET I.

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1.0 GOODEWN.

LIQUID FUEL BURNER.- APPLICIATION man FEB. 11. was.

1,302,360,, I I Patented Apr. 29, 1919.

INVENTOR u rr JOHN o. eeonwm, or neamssua -rsunsutvnma.

LIQUID-FUEL BURNER.

is income.

Application filed. February 11, 1918. Serial No. 216,509.

To all whom it may concern Be it known that 1, JOHN O. Goomvnv, a citizen of the United States, residing at Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Liquid-Fuel comlng into contact, as 1t does, with the tar Burners, of: which the following is a full, clear, and exact description.

The invention, which constitutes the subject matter of this application, relates to improvements in liquid fuel burners. Specifically the invention has to do not only with certain structural features pertaining to simplicity but with a device which may be operated by steam and superheated air and by steam alone. Any kind of liquid fuel ma be employed but the burner is particu lar y adapted to burn coal taror colre oven tar which is very heavy and much diihculty encountered. to obtain the proper atomization of the tough particles therein.

Referring to the drawings:

Figure 1 illustrates a longitudinal section of improved. device on line av -a2 of Fig. 3.

- Fig.2 is a cross section of the device taken on line gr 'y of 1.

Fig. 3 isnn end view of the device.

Fig. 4t illustrates a modified form of the nozzle taken on the line 4 -4 of Fig. (i.

\ Fig. 5 is a section taken on the li-ne-h e' o'f Fig. 6. y

Fig. 6 isv a front view showing the discharge end. of the nozzle. 1PFig, 'l is a cross section on line 7-7 of l n detail the reference numeral 10 designates the body of the burner, preferably cast, to which the various parts are connected. This body is provided with a chamber 11 to which the tar or other oil is admitted through pipe 12 the latter being provided wth a valve 13 to regulate the supply of fuel to the chamber 11. To the proection 1% is connected a steam pipe 15 pro vided with a valve 16 to regulate the flow of steam through the nozzle 17,'the latter being suitably secured to the projection 14. I30- cated Within and secured to the body 10 is a second. nozzle 18 having flaring ends 19 and 20 and the neck or restricted portion 21 As Will be seen from Fig. 1, the interior of nozzle 17 flares outwardly relative to the direc tionoi low of the steam, the inner end of which located adjacent to the end of the flare 19 of nozzle 18. The inlet to the inwardly flaring portion 19 is slightly larger Specificatioii of Letters Patent. Pat erned Apr, 2%, 191 13% than the discharge end of nozzle 1 v This enables the steam ejected from the nozzle 17.

to draw into the nozzle-l8 athin sheet of tar or oil from the chamber 11, andto break up the tough texture of the tar. This steam becomes somewhat condensed. The com- "mingled steam-and tar noW- pass through the restricted portion 21 or the nozzlelS and not only become equalized in temperature and thoroughly mixed but result in a heavy vapor. This vapor passes out of the flared end 20 of the nozzle 18 into the member or expansion chamber 22 located in the heating compartment 23, the latter being defined by the body 10 and the casing '24: screwthreaded thereto. The member 22 is preferably screw-threaded to the burner body and seats on the shoulder 25 of the nozzle 18 to hold the latter in place. This facilitates the removal of the nozzle 18 when thatis desired. Superheated steam or air from any suitable source, is admitted to the compartment through pipe 26, the latter being pro vided with avalve 27 to regulate the flow. The Walls of the member 22 are preferably quite thin to enable a rapid heat transferonce from the heating chamber to the heavy vapor inside of said member. The heating "ofthe vap'orinathisgnanner causes the fi lfrto become thoroughly atomized. The" iiiember 22 preferably flares outwardly at its outer end and is provided with a spider 28 to which is sc'rewthreaded a conical member 29. This conical member is provided with a laterally projecting lip 30 somewhat larger than the ihner walls of the outlet end of the member 22 thus tending to deflect the vapor at right angles to the axis of the member 22. The outer end of the casing 24: and the outer end of the member 22 terminate in substantially the same plane and define an outlet 31 for the fluid passing through the heating compartment 23. The superheated steam or air flowingbetween the Walls of the heating compartment and the outer .Walls of the member 22 raises the temperature of the vapor to any desired degree, and in its discharge the heating fluidstrilresthe superthrough the member 22 is sufficiently retarded to enable it to be heated to the temperature at which it is transferred into a gaseous vapor. before being discharged into the combustion chamber. The walls of the various parts of the burner are constructed with a view of obtaining a'ninimuni resistance to the flow of fluid therethrough, while at the same time providing a thorough mixing of the vapor and steam.

The conical member 29 is adjustably secured to the member 22 and for the purposes of assembling, removal and adjustment it is provided with recesses 33 adapted to receive a spanner, and for the purpose of maintaining said conical member in any ad justed position I employ a set screw 34 which cooperates with the spider 28 .to lock the conical member against rotation.

In Figs. 4 to 7 inclusive is illustrated a modified form in which the discharge nozzle 35 is flattened, made in one piece with the su'perheating chamber 36, and preferably screw-threaded to the body 10 of the burner. Either form of nozzle may be employed with the body 10.

From the foregoing it will be readily apparentthat I have devised a burner adapted to produce Within itself a perfect combustibl'e mixture, and provided with suitable means for adjusting the various parts to meet the particular exigencies or conditions ordinarily met with in using a device of' this character. It is to be understood, however, that I do not limit myself to the exact construct-i'ons illustrated and described as vari 4 ous changes may befmade in points of detail and other embodiments resorted to Without deviating from the true spirit and. scope of my invention. I claim 1. A burner of the class described, comprising a body having a liquid fuel receivinlet to which is adjacent to and of greatei nozzle and the central portion of Whi b s ing chamber and heating chamber a sh nozzle, the discharge end of which is lo in said liquid fuel receiving chamber, a

ceiving member for the steam and fuel,

diameter than the discharge end of sad reduced to compress the steam and fuel equalize the temperature thereof, in con nation. with a member or chamber, loca. within said heating compartment, to valporize the fuel Jfrom the recci chamber, and means for eifecting a i of superheated steam or air from ing compartment and the vaporized ma terial from the expansion chamber.

A. humor of the class described, prising a body having a liquid fuel re a ing chamber, a steam nozzle, the discha end of which is located in said char'b vaporizingtube into which steam f nozzle and fuel from said chain jected, in combination with within the burner itself for vapor. fuel.

3. A burner of the class described, prising a body having a liquid fue ing chamber, a steam nozzle the di end of which is located in said chaz I vaporizing tube into which steam from said nozzle and fuel from said chamberis jected provided with means for retarding the flow of vapor therethrough, in combination with a superheater within the burner itself for atomizing the vapor.

$35 hereunto my JOHN "C. GOODWIN. 

